Issue was that I didn't have

using Microsoft.AspNetCore.Components.WebAssembly.Hosting;

var builder = WebAssemblyHostBuilder.CreateDefault(args);

// This line
builder.Services.AddScoped(http => new HttpClient
{
    BaseAddress = new Uri(builder.HostEnvironment.BaseAddress)
});

await builder.Build().RunAsync();

in my code and only registered an httpclient in the server. This messed something up in the @inject HttpClient Http that was not visible in the f12 console for some reason.